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Finding the Fourth Proportional to 65,255.78, 90,050.57 and 35,447.14

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Solution

The fourth proportional to 65,255.78, 90,050.57 and 35,447.14 is: 48,915.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,255.78 : 90,050.57 = 35,447.14 : x
  2. Step 2: Convert to fraction form
    65,255.78/90,050.57 = 35,447.14/x
  3. Step 3: Cross multiply
    65,255.78x = 90,050.57 × 35,447.14
  4. Step 4: Simplify right side
    65,255.78x = 3,192,035,161.87
  5. Step 5: Solve for x
    x = 3,192,035,161.87/65,255.78
  6. Step 6: Final answer
    x = 48,915.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.